Canon MG8100 series On-Screen Manual page 710

underscore is added to the beginning of the file name. (Example: _Image0001.jpg)
Open the save dialog box after scanning the image (Input Exif information)
Select this to open the Save dialog box after scanning the images and specify the save settings
such as destination folder, file name and Exif information.
Save Dialog Box
Application Settings
Open with
You can select whether to open the View & Use window or Explorer after saving the images.
Start scanning by clicking the one-click button
Select this checkbox to start scanning when you click an icon in One-click Mode.
Apply
Saves and applies the specified settings.
Click Cancel instead of Apply to cancel the specified settings.
Cancel
Cancels the specified settings. The current screen closes.
Defaults
Returns all settings in the screen to their defaults.
Preview / Scan
Displays the thumbnails of the photos on the film.
Click Scan in the displayed screen to scan and save film with the specified settings.
When you select the Use the scanner driver checkbox, this button changes to Scan.
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